Overview Determining the Safe Dosage of Ascorbic Acid Used in the Treatment of Occluded Totally Implanted Central Venous Catheter Status: Completed Trial end date: 2010-07-01 Target enrollment: Participant gender: Summary The hypothesis of the study is to evaluate whether ascorbic acid is able to clear totally implanted central venous catheter Phase: Phase 2 Details Lead Sponsor: University of Sao PauloTreatments: Ascorbic Acid